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glug · 03-31-2011, 12:34 PM

I tried that circuit yesterday, and drove it with the sound output of my laptop. The results weren't optimal - still a sine wave. Perhaps there was not enough gain in the circuit. It is also possible my laptop output was too weak.

I also tried a 741 based design I saw in a book while buying parts at the 'shack. Similar result. The schematics I see tend to be speculative, and not tested with automotive reluctors. It'd be easier if I had a scope, but even then, I'm not much of a hardware guy in regard to developing the circuit.

So I'm still not MPGuinoing

03-31-2011, 12:34 PM	#7 (permalink)
glug EcoModding Lurker Join Date: Mar 2011 Location: In My Truck Posts: 23 Thanks: 6 Thanked 0 Times in 0 Posts	I tried that circuit yesterday, and drove it with the sound output of my laptop. The results weren't optimal - still a sine wave. Perhaps there was not enough gain in the circuit. It is also possible my laptop output was too weak. I also tried a 741 based design I saw in a book while buying parts at the 'shack. Similar result. The schematics I see tend to be speculative, and not tested with automotive reluctors. It'd be easier if I had a scope, but even then, I'm not much of a hardware guy in regard to developing the circuit. So I'm still not MPGuinoing